package com.bdqn.crm.config.shiro;

import com.alibaba.fastjson.JSON;
import com.bdqn.crm.pojo.SysRight;
import com.bdqn.crm.pojo.SysRole;
import com.bdqn.crm.pojo.SysUser;
import com.bdqn.crm.service.SysUserService;
import org.apache.shiro.authc.*;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.util.ByteSource;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;

import javax.annotation.Resource;
import java.util.Set;
import java.util.concurrent.TimeUnit;

public class MyShiroRealm extends AuthorizingRealm {


    @Resource
    private SysUserService userService;

    @Resource
    private StringRedisTemplate stringRedisTemplate;

    //redis中数据的key前缀
    private String SHIRO_LOGIN_COUNT = "shiro_login_count_";   //登录次数
    private String SHIRO_IS_LOCK = "shiro_is_lock_";    //锁定用户登录


    /**
     * 获取身份信息
     *
     * @param authenticationToken
     * @return
     * @throws AuthenticationException
     */
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken) throws AuthenticationException {
        System.out.println("调用MyShiroRealm.doGetAuthenticationInfo 获取身份信息！");
        //获得身份信息
        UsernamePasswordToken token = (UsernamePasswordToken) authenticationToken;
        String usrName = token.getUsername();
        //每次访问，登录次数+1
        ValueOperations<String,String> opsForValue = stringRedisTemplate.opsForValue();
        opsForValue.increment(SHIRO_LOGIN_COUNT+usrName,1);

        if(Integer.parseInt(opsForValue.get(SHIRO_LOGIN_COUNT+usrName))>5){
            opsForValue.set(SHIRO_IS_LOCK+usrName,"LOCK");
            stringRedisTemplate.expire(SHIRO_IS_LOCK+usrName,1, TimeUnit.HOURS);
            stringRedisTemplate.delete(SHIRO_LOGIN_COUNT+usrName);  //清空登录计数
        }

        if("LOCK".equals(opsForValue.get(SHIRO_IS_LOCK+usrName))){
            throw new DisabledAccountException();
        }


        SysUser user = userService.findUserByUsrName(usrName);
        if (user == null) {
            throw new UnknownAccountException();    //账号错误
        }
        if (user.getUsrFlag() == null || user.getUsrFlag().intValue() == 0) {
            throw new LockedAccountException();     //账号锁定
        }
        SimpleAuthenticationInfo info = new SimpleAuthenticationInfo(
                user,//身份(根据用户名查询数据库获得的用户)
                user.getUsrPassword(),//凭证(查询数据库获得的密码)
                ByteSource.Util.bytes("czkt"), //加密使用的salt
                getName()//Realm对象的名称
        );
        return info;
    }

    /**
     * 获取权限信息(角色和权限)
     *
     * @param principalCollection
     * @return
     */
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        System.out.println("调用MyShiroRealm.doGetAuthorizationInfo 获取权限信息!");
        SysUser user = (SysUser) principalCollection.getPrimaryPrincipal();
        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
//        //静态授权:授予主体(用户)相应的角色和权限
//        info.addRole(user.getRole().getRoleName());
//        info.addStringPermission("用户列表");       //所有用户拥有"用户列表"权限
//        if ("管理员".equals(user.getRole().getRoleName())) {     //管理员拥有"增删改"权限
//            info.addStringPermission("用户添加");
//            info.addStringPermission("用户编辑");
//            info.addStringPermission("用户删除");
//        }
        SysRole role = user.getRole();
        if(role!=null){
            info.addRole(user.getRole().getRoleName());
            Set<SysRight> rights= role.getRights();
            if(rights!=null && rights.size()>0){
                for (SysRight right : rights) {
                    info.addStringPermission(right.getRightCode());
                }
            }
        }
        return info;
    }


}
